MX3052E - IMPROVEMENTS TO AN APPARATUS TO EXAMINE BIOLOGICAL TISSUE MEASURING THE ABSORPTION OF RANGE RANGE OR X-RAY - Google Patents
IMPROVEMENTS TO AN APPARATUS TO EXAMINE BIOLOGICAL TISSUE MEASURING THE ABSORPTION OF RANGE RANGE OR X-RAYInfo
- Publication number
- MX3052E MX3052E MX100183U MX10018374U MX3052E MX 3052 E MX3052 E MX 3052E MX 100183 U MX100183 U MX 100183U MX 10018374 U MX10018374 U MX 10018374U MX 3052 E MX3052 E MX 3052E
- Authority
- MX
- Mexico
- Prior art keywords
- detector
- radiation
- radiation source
- range
- output signal
- Prior art date
Links
- 238000010521 absorption reaction Methods 0.000 title abstract 2
- 230000005855 radiation Effects 0.000 abstract 9
- 230000007246 mechanism Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 1
- 230000002285 radioactive effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/48—Diagnostic techniques
- A61B6/482—Diagnostic techniques involving multiple energy imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/505—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of bone
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- Optics & Photonics (AREA)
- Surgery (AREA)
- Public Health (AREA)
- Molecular Biology (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- High Energy & Nuclear Physics (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Toxicology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
La presente invención se refiere a mejoras a un aparato para examinar tejido biológico midiendo la absorción de los Rayos Gama o de los Rayos X, el cual incluye al menos dos substancias diferentes del tipo que comprende una fuente de radiación radioactiva que emite haces de radiación gama o rayos X, un detector para detectar las radiaciones emitidas por la fuente de radiación; que el detector produce una señal de salida que depende de la intensidad de radiación que cae sobre el detector, mecanismos para sostener la fuente de radiación y al detector en forma tal que el haz es dirigido hacia el detector y que así la muestra puede ser colocada entre la fuente de radiación y el detector mientras es pasada por el haz de radiación; y mecanismos para procesar la señal de salida, caracterizadas en que la fuente de radiación emite fotones de al menos dos energías diferentes; que el detector produce impulsos de salida por cada fotón incidente que la amplitud de la pulsación es proporcional a la energía del fotón; que el mecanismo de procesamiento incluye un primer discriminador de impulsos conectados a la salida de el detector y que pasa impulsos correspondientes a una primera energía de fotón; y un primer medidor de proporción logarítmica conectando al primer discriminador de impulsos el cual produce una primera señal de salida proporcional al logaritmo de la frecuencia de impulsos de entrada al mismo.The present invention relates to improvements to an apparatus for examining biological tissue by measuring the absorption of Gamma Rays or X-Rays, which includes at least two different substances of the type comprising a radioactive radiation source that emits gamma radiation beams or X-rays, a detector to detect the radiation emitted by the radiation source; that the detector produces an output signal that depends on the intensity of radiation falling on the detector, mechanisms to hold the radiation source and the detector in such a way that the beam is directed towards the detector and thus the sample can be placed between the radiation source and the detector as it is passed through the radiation beam; and mechanisms to process the output signal, characterized in that the radiation source emits photons of at least two different energies; that the detector produces output pulses for each incident photon that the pulse width is proportional to the energy of the photon; that the processing mechanism includes a first pulse discriminator connected to the detector output and passing pulses corresponding to a first photon energy; and a first logarithmic ratio meter connecting to the first pulse discriminator which produces a first output signal proportional to the logarithm of the input pulse frequency thereto.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7306721A SE373279B (en) | 1973-05-11 | 1973-05-11 | PROCEDURE AND DEVICE FOR EXAMINING A PART OF A BIOLOGICAL TISSUE |
Publications (1)
Publication Number | Publication Date |
---|---|
MX3052E true MX3052E (en) | 1980-03-05 |
Family
ID=20317447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX100183U MX3052E (en) | 1973-05-11 | 1974-05-10 | IMPROVEMENTS TO AN APPARATUS TO EXAMINE BIOLOGICAL TISSUE MEASURING THE ABSORPTION OF RANGE RANGE OR X-RAY |
Country Status (7)
Country | Link |
---|---|
US (1) | US3944830A (en) |
JP (1) | JPS5048993A (en) |
CA (1) | CA1006989A (en) |
DE (1) | DE2421649A1 (en) |
GB (1) | GB1446818A (en) |
MX (1) | MX3052E (en) |
SE (1) | SE373279B (en) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2531477A1 (en) * | 1975-07-15 | 1977-02-03 | Philips Patentverwaltung | ARRANGEMENT FOR DETERMINING THE ABSORPTION OR EMISSION OF RADIATION |
GB1578442A (en) * | 1976-07-01 | 1980-11-05 | Emi Ltd | Radiography |
US4217641A (en) * | 1978-04-28 | 1980-08-12 | U.S. Philips Corporation | Correction for polychromatic X-ray distortion in CT images |
US4251810A (en) * | 1978-05-30 | 1981-02-17 | Kay-Ray, Inc. | Apparatus for and methods of remotely monitoring outputs of Geiger-Mueller tubes |
US4333145A (en) * | 1979-11-29 | 1982-06-01 | Technicare Corporation | Method of high resolution partial area scan involving concentrated high density material outside the partial area |
US4321469A (en) * | 1979-12-17 | 1982-03-23 | Caterpillar Tractor Co. | Nucleonic gauge for determining lubricant level in a joint and method |
DE3123685A1 (en) * | 1980-06-19 | 1982-03-18 | Fuji Electric Co., Ltd., Kawasaki, Kanagawa | METHOD FOR MEASURING THE WALL THICKNESS OF TUBULAR OBJECTS |
JPS6193936A (en) * | 1984-10-13 | 1986-05-12 | Furukawa Electric Co Ltd:The | Method for analyzing composition of material to be measured by radiation |
JPS61109557A (en) * | 1984-11-02 | 1986-05-28 | 帝人株式会社 | Evaluation of bone |
US4663772A (en) * | 1985-09-30 | 1987-05-05 | Picker International, Inc. | Bone mineral analysis phantom |
DE3687519T2 (en) * | 1985-11-11 | 1993-05-13 | Teijin Ltd | METHOD FOR ASSESSING BONES. |
US5044002A (en) * | 1986-07-14 | 1991-08-27 | Hologic, Inc. | Baggage inspection and the like |
US5040199A (en) * | 1986-07-14 | 1991-08-13 | Hologic, Inc. | Apparatus and method for analysis using x-rays |
US4811373A (en) * | 1986-07-14 | 1989-03-07 | Hologic, Inc. | Bone densitometer |
US4947414A (en) * | 1986-07-14 | 1990-08-07 | Hologic, Inc. | Bone densitometer |
US5148455A (en) * | 1986-07-14 | 1992-09-15 | Hologic, Inc. | Bone densitometer |
US6230036B1 (en) | 1987-05-15 | 2001-05-08 | Hologic, Inc. | System for radiologically scanning the spine for measuring bone density |
US4986273A (en) * | 1989-08-07 | 1991-01-22 | Medical & Scientific Enterprises, Inc. | Method of radiologically scanning the spine for measuring bone density |
US5572998A (en) * | 1987-05-15 | 1996-11-12 | Hologic, Inc. | Method of scanning the spine of a patient to determine bone density along two different axes |
WO1988008688A1 (en) * | 1987-05-15 | 1988-11-17 | Medical & Scientific Enterprises, Inc. | Radiological apparatus for measuring bone density |
USRE34511E (en) * | 1987-05-15 | 1994-01-18 | Hologic, Inc. | Method of radiologically scanning the spine for measuring bone density |
US5165410A (en) | 1987-05-15 | 1992-11-24 | Medical & Scientific Enterprises, Inc. | Position indicating system for a multidiagnostic scanner |
US4910757A (en) * | 1987-11-06 | 1990-03-20 | Hitachi, Ltd. | Method and apparatus for X-ray imaging |
US5005196A (en) * | 1989-03-10 | 1991-04-02 | Expert Image Systems, Inc. | Limb positioning and calibration apparatus for radiographic imaging |
US5090040A (en) * | 1989-03-10 | 1992-02-18 | Expert Image Systems, Inc. | Data acquisition system for radiographic imaging |
US6031892A (en) * | 1989-12-05 | 2000-02-29 | University Of Massachusetts Medical Center | System for quantitative radiographic imaging |
US5150394A (en) * | 1989-12-05 | 1992-09-22 | University Of Massachusetts Medical School | Dual-energy system for quantitative radiographic imaging |
US5319547A (en) * | 1990-08-10 | 1994-06-07 | Vivid Technologies, Inc. | Device and method for inspection of baggage and other objects |
US5748705A (en) * | 1993-11-22 | 1998-05-05 | Hologic Inc. | X-ray bone densitometry |
US5432834A (en) * | 1993-11-22 | 1995-07-11 | Hologic, Inc. | Whole-body dual-energy bone densitometry using a narrow angle fan beam to cover the entire body in successive scans |
US6217214B1 (en) | 1993-11-22 | 2001-04-17 | Hologic, Inc. | X-ray bone densitometry apparatus |
US5838765A (en) * | 1993-11-22 | 1998-11-17 | Hologic, Inc. | Whole-body x-ray bone densitometry using a narrow-angle fan beam, including variable fan beam displacement between scan passes |
US5687211A (en) * | 1993-11-22 | 1997-11-11 | Hologic, Inc. | Bone densitometry scanning system and method for selecting scan parametric values using x-ray thickness measurement |
US6059455A (en) * | 1993-11-22 | 2000-05-09 | Hologic, Inc. | Portable X-ray bone densitometry system |
US5715820A (en) * | 1995-06-06 | 1998-02-10 | Hologic, Inc. | X-ray bone densitometry using multiple pass scanning with image blending |
US5852647A (en) * | 1997-09-24 | 1998-12-22 | Schick Technologies | Method and apparatus for measuring bone density |
US6320931B1 (en) | 1998-03-02 | 2001-11-20 | Image Analysis, Inc. | Automated x-ray bone densitometer |
WO2000068710A2 (en) | 1999-05-10 | 2000-11-16 | Lippens Francois | Energy-selective x-ray radiation detection system |
GB2382135A (en) * | 2001-11-20 | 2003-05-21 | Spectral Fusion Technologies L | X-ray apparatus for grading meat samples according to a predetermined meat to fat ratio |
US6990222B2 (en) * | 2001-11-21 | 2006-01-24 | Arnold Ben A | Calibration of tissue densities in computerized tomography |
WO2003092465A2 (en) * | 2002-05-02 | 2003-11-13 | Csir | Bone densitometry and mammography |
KR100832485B1 (en) | 2006-11-04 | 2008-05-26 | 박영웅 | Method and Apparatus for Measuring the Density, the Component, and the Composition of Materials by Using Dual Radiation |
KR100982000B1 (en) | 2008-03-28 | 2010-09-13 | 주식회사 씨알테크놀러지 | Bone Density Measurement Device Using Photon Counting Detection And Method Thereof |
JP6399967B2 (en) * | 2014-09-17 | 2018-10-03 | 三菱電機株式会社 | Resin piece sorting method and resin piece sorting apparatus |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2884535A (en) * | 1956-01-26 | 1959-04-28 | Foxboro Co | Radio-active gauging system |
US3432657A (en) * | 1965-07-06 | 1969-03-11 | Intelligent Instr Inc | X-ray helical scanning means for displaying an image of an object within the body being scanned |
GB1127342A (en) * | 1966-03-28 | 1968-09-18 | Nat Res Dev | Method of and apparatus for determining the mean size of given particles in a fluid |
GB1283915A (en) * | 1968-08-23 | 1972-08-02 | Emi Ltd | A method of and apparatus for examination of a body by radiation such as x or gamma radiation |
-
1973
- 1973-05-11 SE SE7306721A patent/SE373279B/en unknown
-
1974
- 1974-05-04 DE DE2421649A patent/DE2421649A1/en not_active Withdrawn
- 1974-05-07 GB GB2017774A patent/GB1446818A/en not_active Expired
- 1974-05-09 CA CA199,445A patent/CA1006989A/en not_active Expired
- 1974-05-10 JP JP49052166A patent/JPS5048993A/ja active Pending
- 1974-05-10 MX MX100183U patent/MX3052E/en unknown
- 1974-05-10 US US05/469,009 patent/US3944830A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS5048993A (en) | 1975-05-01 |
US3944830A (en) | 1976-03-16 |
CA1006989A (en) | 1977-03-15 |
GB1446818A (en) | 1976-08-18 |
DE2421649A1 (en) | 1974-11-21 |
SE373279B (en) | 1975-02-03 |
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